Yoga Sūtra Chapter Four verse 2
जात्यन्तरपरिणामः प्रकृत्यापूरातः ॥२॥
jāti-antara-pariṇāmaḥ prakṛti-āpūrāt ||2||
The transformation into other existences
is due to the flow from the process of matter.
jāti - existenceantara - otherpariṇāma - transformation into; change, alteration, development, evolutionprakṛti - the original producer of the material world; nature or process of matter; nature, character, constitution, temper, dispositionāpūrā - flow